Muhammad al-Rudani () (c. 1627 – 1683) was a Moroccan polymath who was active as an astronomer, grammarian, jurist, logician, mathematician and poet. Biography Al-Rudani was born in in Taroudant. He was of Shilha origin. After studying in his hometown at the Great Mosque of Taroudant and its Madrasa, he continued his studies in the Zaouia Nasiriyya under Mohammed ibn Nasir for four years, the Zaouia of Dila, in Marrakesh and in Fez. His teachers in Morocco were: the theologian Isa al-Sugtani (d.1651), the chronologist Muhammad ibn Said al-Marghiti (d. 1679), and the grammarian Muhammad al-Murabit al-Dilai' (d. 1678). Afterwards, he left to study in the Islamic east. Thus, in the early 1650s, he stayed in Algiers, where he studied under the logician Said ibn Ibrahim Qaddura. In Egypt and the Levant, he studied under Ali al-Ajhuri, Shihab al-Din al-Khafaji, Shihab al-Din al-Qaliyubi, Muhammad ibn Ahmad al-Shubri, al-Shaikh Sultan, Khayr al-Din al-Ramli, Muhammad al-Naqib ibn Hamza al-Hasani and Ibn Balban. He got an ijazah from all of these scholars. He spent most of his life in Ottoman territories. He is especially well known for the invention of a spherical device into which another sphere (painted blue) with a different axis was placed. This second sphere was divided into two parts in which the zodiacal signs with their sections and regions were drawn. He died in Damascus on October 31, 1683. Works Some of his works are: Silat al-khalaf bi-mawsūl al-salaf, an extensive record of the various chains of certifications he had received Bahjat al-tullāb fı̄ l-'amal bil-asturlāb, a treatise on the astrolabe Maqāsid al-'awālı̄ bi-qalā'id al-la'ālı̄, a didactic poem on ilm al-mı̄qāt (chronology) with a prose commentary al-Nāfi'a 'alā l-āla al-jāmi'a completed in 1661, a treatise describing the spherical astrolabe that he had constructed. Jam' al-fawā'id min Jāmi' al-usūl wa Majma' al-zawā'id, a compilation of hadith References Sources 1627 births 1683 deaths 17th-century Berber people 17th-century Moroccan people Berber writers Moroccan writers Moroccan astronomers People from Taroudannt Scientists who worked on qibla determination Shilha people